| Anderson Homes | Larry Wayne Anderson | cservice@anderson-homes.com | (831) 636-9999 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Andrew Bracken | Andrew Bracken | — | (209) 327 7498 | Other | Lodi · San Joaquin County | — | — |
| Andrew Brais | Andrew Brais | — | (209) 298 8571 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Andrew D Smith | Andrew D Smith | asmith@andrewdsmith.com | (209) 608-2643 | GC, remodel, ADU | Lodi · San Joaquin County | — | — |
| Andrew L Lee INC | Andrew Leslie Lee | info@andrewllee.com | (209) 369 8077 | Other | Lodi · San Joaquin County | — | — |
| Andrew Selles | Andrew Selles | — | (209) 471 5310 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Andrew Thompson Electric | Andrew Charles Thompson | — | (510) 390 6417 | Electricians | Stockton · San Joaquin County | — | — |
| Andrews Data Systems | Andrews Data Systems | — | (925) 200 1177 | Other | Tracy · San Joaquin County | — | — |
| Angel Flight Paving | Katherine Sue Joles | — | (209) 663 6913 | Other | Lodi · San Joaquin County | — | — |
| Angel's Electric Contractor | Miguel Angel | — | (408) 768 9901 | Electricians | Tracy · San Joaquin County | — | — |
| Angel's Plumbing | Angel's Plumbing | — | (209) 405 8310 | Other | Stockton · San Joaquin County | — | — |
| Angkor Heating Air Conditioning & Refrigeration | Somath Po | — | (209) 639 6930 | HVAC | Stockton · San Joaquin County | — | — |
| Angler Electric | Matthew David Feaver | — | (209) 351 4923 | Electricians | Linden · San Joaquin County | — | — |
| Anguiano Plumbing | Anguiano Plumbing | — | (916) 716 3618 | Other | Acampo · San Joaquin County | — | — |
| Anthony Chinchiolo | Anthony Chinchiolo | — | (209) 609 2299 | Electricians | Stockton · San Joaquin County | — | — |
| Anthony Johnstad DBA A J Construction | Anthony Joseph Johnstad | — | (209) 838 8262 | Electricians | Escalon · San Joaquin County | — | — |
| Anthony Tile INC | Mark Anthony Quilon | — | (209) 466 8771 | Other | Stockton · San Joaquin County | — | — |
| Anthony's Building Company | Ralph Anthony Westlake | — | (209) 968 8891 | GC, remodel, ADU | Escalon · San Joaquin County | — | — |
| Anthony's Marble & Tile | Anthony's Marble & Tile | — | (209) 814 0321 | Other | Manteca · San Joaquin County | — | — |
| Antioch Haro Paint INC | Haro Cesar Sandoval | — | (925) 338 3653 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Antonio Hidalgo's Tree Service | Hidalgo Valdez Antonio | — | (209) 777 0797 | Tree | Escalon · San Joaquin County | — | — |
| Antonio Hidalgo's Tree Service INC | Valdez Antonio Hidalgo | — | (209) 777 0797 | Tree | Escalon · San Joaquin County | — | — |
| Any Fence | Any Fence | — | (408) 310 0699 | Other | Manteca · San Joaquin County | — | — |
| Apex Door LLC | Joseph Richard Jr Schmit | — | (209) 609 2293 | Other | Stockton · San Joaquin County | — | — |
| Apex Wood Floors Ca LLC | Alejandro Ramos | — | (209) 329 3433 | Other | Lodi · San Joaquin County | — | — |
| Applegate Painting | Applegate Painting | — | (209) 595 0149 | Windows, patio, painters | Escalon · San Joaquin County | — | — |
| Aqua Bay Pools Services | Ryan Patrick Richey | — | (925) 813 4639 | Pool | Tracy · San Joaquin County | — | — |
| Aqua Pro Plumbing And Rooter INC | Jose Alejandro Santibanez Mendiola | — | (209) 831 9415 | Other | Tracy · San Joaquin County | — | — |
| Aqua Proof INC | Eloy Ruvalcaba | — | (209) 234 1800 | Other roofers | Lodi · San Joaquin County | — | — |
| Aqua Tech Plumbing | Jeffery James Elmore | kp.aquatech@gmail.com | (209) 610 9703 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Aqua Unique Pools/cypress Builders | Aqua Unique Pools/cypress Builders | — | (925) 895 0281 | GC, remodel, ADU | Stockton · San Joaquin County | — | — |
| Aquascape Creations & Landscape Solutions | Aquascape Creations & Landscape Solutions | — | (925) 222 5052 | Windows, patio, painters | Mountain House · San Joaquin County | — | — |
| Aquatic Pool And Spa INC | Juan Antonio Martinez Castillo | — | (209) 914 1826 | Pool | Manteca · San Joaquin County | — | — |
| Aquos Pools | Aquos Pools | — | (209) 239-0077 | Pool | Manteca · San Joaquin County | — | — |
| Arahon's Custom Tile | Arahon's Custom Tile | — | (510) 754 6687 | Other | Manteca · San Joaquin County | — | — |
| Arc Painting INC DBA Arc Painting And Remodeling | Jorge Luis Verduzco Bravo | — | (408) 309 9818 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |
| Armando Alvarez | Armando Alvarez | — | (408) 569 8530 | Other | Lathrop · San Joaquin County | — | — |
| Armstrong Painting INC | Barry Louis Jr Armstrong | — | (209) 469 2405 | Windows, patio, painters | Stockton · San Joaquin County | — | — |
| Arnaiz Development Company INC | Howard David Arnaiz | — | (209) 931 9740 | HVAC | Stockton · San Joaquin County | — | — |
| Arnaudo Construction INC | Garrett Leo Arnaudo | — | (209) 835 1055 | GC, remodel, ADU | Tracy · San Joaquin County | — | — |